There are no delay audio options on the amp....well I can adjust each speaker to take into account the distance away they are from the listener.There is no overall adjustment
Also,I've tried connecting the Tivo box direct to the tv or thru the amp via hdmi.The 1st way the audio is delayed,the 2nd way the audio is ahead of the picture....althought the degree to which it is out varies.
I don't think I'm the only person having this issue
Incidentally I have also noticed sync issues through the tvs own speaker ! It's as though the audio and video data is being sent independently
There are actually many many reports of this problem.
Because you're using the optical output, the picture goes off to be processed by the TV, and the audio by the sound system, independently. Without an audio delay function, synchronisation cannot be assured. An audio delay feature would certainly be handy.
Only thing you can do is to turn off as much post-processing functions on the TV, to reduce the picture delay, so that the audio will no longer precede the picture. It's not ideal. This is why HDMI ARC is the best option, though not all receivers are compatible.